package work810;

import java.util.Random;

public class work3 {
  public static void main(String[] args) {
    String verCode ="";
    int ii = 0;
    while (ii < 15) {
      Random random = new Random();
      int i = random.nextInt(123);
      if (i >= 65 && i <= 90) {
        verCode = verCode + (char)i;
        ii++;
      }else
      if (i >= 97 && i <= 122) {
        verCode = verCode + (char)i;
        ii++;
      }else
      if (i >= 0 && i < 10) {
        String b = random + "";
        verCode = verCode + b.charAt(0);
        ii++;
      }
    }
    System.out.println(verCode);
  }
}
